When I try to log into halo infinite with my microsoft account it is stating that my account is not authorized to play halo infinite, even though I have access to the flight through the halo waypoint beta.
If you have XSX try restarting the game since worked for me but if on PC then not sure since couldn’t find any solutions for that at the moment since been looking into it.
The same happened to me, I tried logging in twice but got the same “Not authorized to play halo infinite” even though I only have the one account
Same for me, I’m really disappointet.
Having the same issue
Well I left for like 2 hours then came back and I got in so it might be random